As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ELECTRICAL ODOR IN AFT CABIN. FOUND POTABLE WATER COMPRESSOR FAILED. REMOVED AND REPLACED POTABLE WATER COMPRESSOR IAW AMM 38-42. REMOVED AND REPLACED RECIRCULATION FILTERS IAW B737 AMM 21-25. POTABLE WATER COMPRESSOR RUNS AND SHUTS OFF NORMAL. (8981958) AIRCRAFT WAS GROUNDED.